On Wed, 5 Mar 2003, Oliver Fleischmann wrote:
> Is the example in the Exim book (on page 365) save?
>
> server_condition = ${if crypteq{$3}\
> {${extract{1}{:}{${lookup{$2}lsearch{/etc/passwd}{$value}}}}\
> }{yes}{no}}
Yes. Analysis: If the lookup fails, it will yield the empty string,
so you have
server_condition = ${if crypteq{$3}\
{${extract{1}{:}{}}\
}{yes}{no}}
Extracting the first string from an empty string also gives an empty
string, we we end up with
server_condition = ${if crypteq{$3}{}{yes}{no}}
The crypteq condition always fails if the encoded string has fewer than
two characters (the salt).
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
